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ENGR00124326 MX53: Add SPDIF Tx support

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Add SPDIF Tx support for MX53 EVK board.
1. Support 44.1KHZ sample rate.
2. 48K and 32K sample rates require 24.576MHZ OSC connected to
CKIH2. But it's "DNP" in EVK.

Test conditions:
1. Connect MX51 Accessory Card with J94 port in EVK.
2. SPDIF_OUT pin conflicts with 12V pin used by CAN feature.
Add "spdif" command option in the command line to enable SPDIF

Signed-off-by: Lily Zhang <r58066@freescale.com>
This commit is contained in:
Lily Zhang
2010-06-11 09:47:28 +08:00
committed by Matt Sealey
parent c1771bf6cb
commit 48ff3cbb9e
2 changed files with 33 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
arch/arm/mach-mx5/mx53_evk.c
View File

@@ -617,6 +617,15 @@ static struct flash_platform_data mxc_nand_data = {
.init = nand_init,
};
static struct mxc_spdif_platform_data mxc_spdif_data = {
.spdif_tx = 1,
.spdif_rx = 0,
.spdif_clk_44100 = 0, /* Souce from CKIH1 for 44.1K */
.spdif_clk_48000 = 7, /* Source from CKIH2 for 48k and 32k */
.spdif_clkid = 0,
.spdif_clk = NULL, /* spdif bus clk */
};
/*!
* Board specific fixup function. It is called by \b setup_arch() in
* setup.c file very early on during kernel starts. It allows the user to
@@ -709,6 +718,8 @@ static void __init mxc_board_init(void)
{
mxc_ipu_data.di_clk[0] = clk_get(NULL, "ipu_di0_clk");
mxc_ipu_data.di_clk[1] = clk_get(NULL, "ipu_di1_clk");
mxc_spdif_data.spdif_core_clk = clk_get(NULL, "spdif_xtal_clk");
clk_put(mxc_spdif_data.spdif_core_clk);
/* SD card detect irqs */
if (board_is_mx53_arm2()) {
@@ -769,9 +780,8 @@ static void __init mxc_board_init(void)
mxc_register_device(&mxcsdhc3_device, &mmc3_data);
mxc_register_device(&mxc_ssi1_device, NULL);
mxc_register_device(&mxc_ssi2_device, NULL);
/*
mxc_register_device(&mxc_alsa_spdif_device, &mxc_spdif_data);
*/
mxc_register_device(&mxc_fec_device, &fec_data);
spi_register_board_info(mxc_dataflash_device,
ARRAY_SIZE(mxc_dataflash_device));

25
arch/arm/mach-mx5/mx53_evk_gpio.c
View File

@@ -794,6 +794,15 @@ static struct mxc_iomux_pin_cfg __initdata nand_iomux_pins[] = {
},
};
static int __initdata enable_spdif = { 0 };
static int __init spdif_setup(char *__unused)
{
enable_spdif = 1;
return 1;
}
__setup("spdif", spdif_setup);
void __init mx53_evk_io_init(void)
{
int i;
@@ -957,10 +966,18 @@ void __init mx53_evk_io_init(void)
gpio_direction_output(IOMUX_TO_GPIO(MX53_PIN_GPIO_14), 0);
gpio_set_value(IOMUX_TO_GPIO(MX53_PIN_GPIO_14), 0);
/* GPIO for 12V */
gpio_direction_output(IOMUX_TO_GPIO(MX53_PIN_GPIO_19), 0);
gpio_set_value(IOMUX_TO_GPIO(MX53_PIN_GPIO_19), 0);
if (enable_spdif) {
mxc_free_iomux(MX53_PIN_GPIO_19, IOMUX_CONFIG_ALT1);
mxc_request_iomux(MX53_PIN_GPIO_19, IOMUX_CONFIG_ALT3);
mxc_iomux_set_pad(MX53_PIN_GPIO_19,
PAD_CTL_DRV_HIGH | PAD_CTL_HYS_ENABLE |
PAD_CTL_PUE_PULL | PAD_CTL_100K_PU |
PAD_CTL_PKE_ENABLE);
} else {
/* GPIO for CAN 12V */
gpio_direction_output(IOMUX_TO_GPIO(MX53_PIN_GPIO_19), 0);
gpio_set_value(IOMUX_TO_GPIO(MX53_PIN_GPIO_19), 0);
}
}
/* workaround for ecspi chipselect pin may not keep correct level when idle */